Hi Kenneth,
It's true about getting more calls with the buyer signs than the seller signs. I've had that same experience everytime and the other peoples' numbers were about right on for me too. For seller signs, because I want them to last, I always put them on telephone poles. I started with stakes, but they always disappeared within a few days. I will go out on a Friday night around 11 or 12, and here's what I take with me:
1. A step ladder
2. A hammer
3. Those nails (about 1 1/4'' long with the plastic washers on them
4. My signs.
I put them up about 8 or 9 feet high. Low enough to be read, but high enough were lazy code enforcement workers can't take them down or razor blade them easily. I use yellow, corrugated plastic 18''x24'' signs with horizontal flutes (so they stand up to wind without bending). I always hand-write them, not because it works better in my area, but because I'm too cheap to have them pre-made :) What I write on them is this:
I BUY UGLY HOUSES
CASH OR TERMS
OFFER IN 2 DAYS!
708-XXX-XXXX
Very simple and to the point.
Buyers signs I will put out on stakes over the weekend and pick them up sunday night or monday mornings. I get a little more creative with those sometimes, just because if I'm building my buyers list I really want the phone to ring.
Hope it helps!